Mining-machine.



-^ H. A3 KUHN.V

NHPHNG'MASHWE. APmcAnou FILED MMM. :914.

aented ov. 26, HHS.

. INVENTQR..

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H. A. KUHN.' MINING MACHINE. APPLICATIONIILD HAY IB'. i914.

I Patented N ov. 26, 15H8. 2 SHEETS-SHEET 2 IIIIlllllll HARRY A. KUHN,or PITTSBURGH, enmrsvl Y MININGLMACHINE.

To all LU/tomi# may concern:

le it known that l, HARRY A; Kenn, a citizen of the United States, andresident of Pittsburgh, in the county of Allegheny and `State 'ofPennsylvania, have invented a new and useful improvement in Mining-Ma-.'chines; and l do hereby declare the following to be a full, clear, andexact description thereof. y

My invention relates to mining machines. In the drawings Figure 1designates a dia.-

ammatioplan view of the machine; Fig. 2f

1s a side viewpartly in section; Fig. 3 is a like view showing themachine frame raised; Figs. fe and 5 aredetailsD In the drawings, the'main partsrof the machine are the same as that which is illustrated anddescribed in an application of even date herewith, Serial No. 839,325,and it isillnstrated more or less diagrammatically.

' he frame 2 .is carried by the traction wheels 3, and inclosed withinthe oo-x or housing d are the' gear connections which drive thetraction'wheels 3'. The lever 5 is employed for giving the forward orbackward movement to the traction wheels 3 inl advancin whose shaft 7 isprovided with the pinion 8 meshing with the gear Wheel 9 on thecountershaft 10. The pinion 11 on the countershaft 10 engages thegearwheel 12 on the Worm-shaft 13. The worm 14 engages the' worm wheel 15 onthe shaft 16 and from this worm wheel power is transmitted to thegearing in the housing 4 which drives the traction wheels 3.

The shaft 16 is connected up bv suitable clutch mechanism with the shaft17 and said. shaft 17 has the beveled pinion 18 which meshes with thebeveled teeth 19 on the large sprocket wheel 20 mounted on the shaft 21.A chain 22 engages the sprocket wheel 20, and said chain passes aroundthe sprocket wheels 23 at the front end of the f rame 2. The chain 22has the iiights 24 and the cutters 25. said flights moving along thefeeding pan 26, all as illustratedV and described in theaforesaid-application. The frame 2- is inclined downwardly and. 1ssupported near its front end by steering wheels 27 L Channel*v 28 aresecured to the frame 2, said channels being inclined and the flangesSpecicationiof Letters Patent.

vmeshes with the gear wheel ly and withdrawingl the frame On the rame 2is supported 'the motor 6 4buggy forward and Patented Nov.

Application led Hay, 1914. Serial No. 839,333.

of said channels forming a 'track the rollers 29 of the buggy 30. Thebuggy 3@ has the threaded nut 31 with which threaded bar 32 engages. Theupper end the threadedbar has the pinion which t3@ meshes with thepinion 34- on the shaft This shaft 35 has the gear 4.wheel Se ich tationof the threaded bar, the buggg.' is vanced with its rollersvmoving inenannel bars and in this way the front end of the frame 2 is lifted asindicated in li f5. The motor 6 above referred to in ada to driving themechanism above de adapted to drive the cutter e cutter bar and motormay be removed p the frame 2 and used in the manner of the ordinaryundercutting mechanism, and ina manner similar to the chain undercutterillustrated and described in an applicat tiled by me, Serial No.796,497. The motor 6 when drawn up onto the frame 2 indicated in thedrawings, 4acts as the power plant for themechanism for driving thechain advancing-the machineinto the coal 3G and the mechanism forraising the Jfront end ci' the machine. In addition it drives the cutterhar 50. y 4Where my improved machine used in connection with the methodset forth in said application No. 7963197A the nndercutting machine maybe drawn oli the frame 2 in the ordinary manner and an undercut madewith the cutter bar 50 in the wall of coaln The coal is then shot toseparate along its lines e of cleavage, and the motor Gand cutter harhaving been drawn back onto the machine'in the position indicated'i-nthe drawing, the machine is then ready to proceed with the mining orremoval of the coal. `Where sl te bandsare present in the Ycoal thecutterI bar eil-may be brought into line with said slate band and as'themachine is advanced v f into the coal, said cutter bar will act to entinto the band while thedislodging and con veying mechanism is operatingalong theqline of the original'u'ndercut to dislodge and rcmove thecoal. Simultaneously with its advancing of the machine into the coal,the mechanism lor 'raising the forward end oi the machineis put intooperation and the threaded har is revolved which feeds the raises themachine into osition indicated in. Fi 5.v SimultanefI ously with thisraising o the machine the Mld ' f is roi-ated and ai'. the same J .Y Yfr zito and. dislodge the mas c cozii so the ciislofiging and conveyingmecha.-

-' mism bciow acts in' conjunction therewith to In thisv manner, thecutter bar not 'oniy may he 'employed for under-cutting the coalT'icfoie shooting but said cutter bar furthermore acts in conjunction.with the dislodging. and conveying mechanism when the machine islirought up into position to remove lthe coa 'What 'I ciaimis:

in a mining machine, the combination Aih a, suitable fmmc; oan endlesschain; waving mechanism carried by said chain; conveying mechanismcarried by said chain; said chain and con'veyer traveling latcrailyaround said frame; a rotary cutter-bar cm fied by sai-d frame; and meansfor raising and lowering said frame simultaneously with lthe operationof said chain and cutter-bar.

In tesimony where-of, I, the said HARRY A. KUHN, have hereunto set myhand.

HARRY A. KUHN. Witnesses:

JOHN F. WILL, .Ronin i). Tommi.

